Home / 2,606.32-3,906.09-1,987.75

Finding the Fourth Proportional to 2,606.32, 3,906.09 and 1,987.75

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Solution

The fourth proportional to 2,606.32, 3,906.09 and 1,987.75 is: 2,979.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,606.32 : 3,906.09 = 1,987.75 : x
  2. Step 2: Convert to fraction form
    2,606.32/3,906.09 = 1,987.75/x
  3. Step 3: Cross multiply
    2,606.32x = 3,906.09 × 1,987.75
  4. Step 4: Simplify right side
    2,606.32x = 7,764,330.40
  5. Step 5: Solve for x
    x = 7,764,330.40/2,606.32
  6. Step 6: Final answer
    x = 2,979.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.